package la.zeg.android.silentcamera.model;

public class ItemColor {
   public static final void decodeYUV(byte[] inputYUV420SP, int [] result, int width, int height) {
     final int frameSize = width * height;
     for (int j = 0, yp = 0; j < height; j++) {
       int uvp = frameSize + (j >> 1) * width, u = 0, v = 0;
       for (int i = 0; i < width; i++, yp++) {
         int y = (0xff & ((int) inputYUV420SP[yp])) - 16;
         if (y < 0) y = 0;
         if ((i & 1) == 0) {
             v = (0xff & inputYUV420SP[uvp++]) - 128;
             u = (0xff & inputYUV420SP[uvp++]) - 128;
         }
         int y1192 = 1192 * y;
         int r = (y1192 + 1634 * v);
         int g = (y1192 - 833 * v - 400 * u);
         int b = (y1192 + 2066 * u);
         if (r < 0) r = 0; else if (r > 262143) r = 262143;
         if (g < 0) g = 0; else if (g > 262143) g = 262143;
         if (b < 0) b = 0; else if (b > 262143) b = 262143;
         result[yp] = 0xff000000 | ((r << 6) & 0xff0000) | ((g >> 2) & 0xff00) | ((b >> 10) & 0xff);
       }
     }
   }
}
